An investment is currently worth 1.035×108 dollars . thirty years ago, the investment was worth 2.3×105 dollars. how many times greater is the value of the investment today than the value of the investment thirty years ago

(1.035 * 10^8) / (2.3 * 10^5) =

0.45 * 10^3 =

4.5 * 10^2 =

450

The parabola passes through the points (-2,0), (0,-4), and (1,0), then these points must satisfy the equation of the parabola.

For example:
1) (0,-4)→for x=0, y=-4→The independent term must be equal to -4
Only option b and d have independent term of -4

2) (1,0)→for x=1, y=0
Equation b. f(1)=2(1)^2+2(1)-4=2(1)+2-4=2+2-4→f(1)=0  Ok
Equation d. f(1)=2(1)^2-2(1)-4=2(1)-2-4=2-2-4→f(1)=-4   No

Option b. f(x)=2x^2+2x-4